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WAEC Mathematics Past Questions & Answers - Page 96

476.

The pie chart shows the distribution of 600 mathematics textbooks for Arts, Business, Science and Technical Classes. How many textbooks are for the technical class?

A.

100

B.

150

C.

200

D.

250

Correct answer is D

Arts = 90o business = 75o, science = 45o

Technical 360o - (90o - 75o + 45o) = 360o - 210o

Technical = 150o

textbooks for technical class = 150o360o x 600

= 250

477.

Using the histogram, what is the median class?

A.

60.5 - 70.5

B.

50.5 - 60.5

C.

40.5 - 50.5

D.

30.5 - 40.5

Correct answer is C

No explanation has been provided for this answer.

478.

Using the histogram, estimate the mode of distribution

A.

51.5

B.

52.5

C.

53.5

D.

54.5

Correct answer is C

No explanation has been provided for this answer.

479.

In the diagram, O is the centre of the circle. OM||XZ and < ZOM = 25º. Calculate ∠XYZ

A.

50o

B.

55o

C.

60o

D.

65o

Correct answer is D

Angle in a semi-circle is 90º when OM is subtended 

: (90 - 25)º 

= 65º

480.

Find the value of m in the diagram

A.

34o

B.

27o

C.

23o

D.

17o

Correct answer is D

ABC, A + 153 = 180 (angles on straight line)

< A = 180 - 153 = 27

< B = 2m(vertically opposite angles)

< C = 7m (corresponding ngles)

< A + < B + < C = 180 (sum of int. angles of )

i.e. 27 + 2m + 7m = 180o

9m = 180 - 27

9m = 153

m = 1539

= 17